Home / 395,519.12-545,665.77-292,400.90

Finding the Fourth Proportional to 395,519.12, 545,665.77 and 292,400.90

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Solution

The fourth proportional to 395,519.12, 545,665.77 and 292,400.90 is: 403,401.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,519.12 : 545,665.77 = 292,400.90 : x
  2. Step 2: Convert to fraction form
    395,519.12/545,665.77 = 292,400.90/x
  3. Step 3: Cross multiply
    395,519.12x = 545,665.77 × 292,400.90
  4. Step 4: Simplify right side
    395,519.12x = 159,553,162,247.19
  5. Step 5: Solve for x
    x = 159,553,162,247.19/395,519.12
  6. Step 6: Final answer
    x = 403,401.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.